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Patents for Frederick A. Hannah
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	617,014	Jan. 03, 1899	F.A. Hannah	Beam Compass
	793,947	Jul. 04, 1905	F.A. Hannah, J.H. Millett	Steam Safety Valve
	794,034	Jul. 04, 1905	F.A. Hannah, J.H. Millett	Steam Safety Valve

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